Question

9.
The acceleration (a)-time (t) graph of a particle
moving in a straight line is as shown in figure. At
time t = 0, the velocity of particle is 10 m/s. What
is the velocity at t = 8 s? [NCERT Pg. 45]
a (m/s)
2-
0
N+
t(s)
4
6
8
-24
-44
-6+.
(1) 2 m/s
(3) 10 m/s
(2) 4 m/s
(4) 12 m/s
​

Answer 1

Hey mate,

Velocity= area of acceleration - time graph

⇒Velocity= 21×2×4=4m/s

Hope it helps.